Arrays are used to put together multiple data types in a single variable in solidity. Similar to creating a list.

//no array

uint number1 = 1;

uint number2 = 2;

uint number3 = 3;

uint number4 = 4;

uint number4 = 5;

 

can now be compressed into one array variable instead of five (5) variable declarations above.

//Array or list

uint[] numbers = [1, 2, 3, 4, 5]; //dynamic array with 4 indexes

Want to learn more? see below:

NOTE:

This Is An Extract From Our FREE Smart Contract Development With Solidity For Beginners Course (If you have not enrolled yet, you can join the course totally for FREE).